Call Lab with questions. Heel stick accepted on newborns if necessary-0.3 mL. Collect before 8:00 a.m.; No collection on Fridays after 7:30 a.m. No collection on holidays or day before holiday (after 7:30 a.m.)

Patient Preparation

None

Specimen Processing Instructions

Whole blood-do not refrigerate or freeze

Transport Requirements

Room Temperature only

Specimen Stability

24 hrs.

Rejection Criteria

Plasma; blood collected in tube other than sodium heparin

Reference Range

Normal/Abnormal; Report will note abnormalities.

Critical Value

Test Includes

Arrangement or rearrangement of chromosomes for diagnosis of genetic disorders.